666670576 has 40 divisors (see below), whose sum is σ = 1517496624. Its totient is φ = 279720960.

The previous prime is 666670553. The next prime is 666670577. The reversal of 666670576 is 675076666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666670577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143401 + ... + 147976.

Almost surely, 2^666670576 is an apocalyptic number.

It is an amenable number.

666670576 is an abundant number, since it is smaller than the sum of its proper divisors (850826048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666670576 is a wasteful number, since it uses less digits than its factorization.

666670576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291409 (or 291403 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 49.

The square root of 666670576 is about 25819.9646785196. The cubic root of 666670576 is about 873.5821722916.

The spelling of 666670576 in words is "six hundred sixty-six million, six hundred seventy thousand, five hundred seventy-six".